Requirements a. What is Sigma Corporation's income tax liability assuming its taxable income is (a) $82,000, (b) $123,000, and (c) $55 million. b. How would your answers change if Sigma were a personal service corporation? Requirement a. (a) What is Sigma Corporation's income tax liability assuming its taxable income is $82,000. pted ma Corporation's income tax liability = Requirement a. (b) What is Sigma Corporation's income tax liability assuming its taxable income is $123,000. Sigma Corporation's income tax liability = Requirement a. (c) What is Sigma Corporation's income tax liability assuming its taxable income is $55 million. (Enter your answer in dollars, not millions.) Sigma Corporation's income tax liability = = Requirement b. How would your answers change if Sigma were a personal service corporation? (a) Assume its taxable income is $82,000. Sigma Corporation's income tax liability as a personal service corporation = (b) Assume its taxable income is $123,000.